FLTK Programming Manual

FLTK 1.3.11 Programming Manual Revision 9.11 by F. Costantini, D. Gibson, M. Melcher, A. Schlosser, B. Spitzak and M. Sweet. Copyright 1998-2025 by Bill Spitzak and others.

This software and manual are provided under the terms of the GNU Library General Public License. Permission is granted to reproduce this manual or any portion for any purpose, provided this copyright and permission notice are preserved.

Preface Introduction to FLTK FLTK Basics Common Widgets and Attributes Colors Box Types Labels and Label Types Drawing Images Designing a Simple Text Editor Drawing Things in FLTK Handling Events Fl::event_*() methods Event Propagation Adding and Extending Widgets Using OpenGL Programming with FLUID GUI Attributes Selecting and Moving Widgets Image Labels

Advanced FLTK Unicode and UTF-8 Support   Appendices: FLTK Enumerations GLUT Compatibility class Fl_Glut_Window Forms Compatibility Operating System Issues Migrating Code from FLTK 1.0 to 1.1 Migrating Code from FLTK 1.1 to 1.3 Developer Information Software License Example Source Code FAQ (Frequently Asked Questions)

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